The PLE version also can not be used to make money (re: any levels, objects, textures, etc you export into your game makes your game unsellable as long as those assets are used in the game).

IMHO, you are better off using a cheaper 3d software; using Maya for just levels is over-over-overkill (like using a grenade to hunt squirrels).

PS: Probably moot anyway, as I believe the Maya PLE version is no longer available.